Dragon Ball Z - episode 1 - 25 Apr, 1989

With no new battles to fight, Goku has been living a quiet life in the countryside with his wife Chi-Chi...and their son Gohan! While Goku makes plans to spend a happy day with friends on Master Roshi's island, a powerful new threat is on its way to Earth. And the arrival of this sinister alien could spell disaster for Goku and his friends! (Source: dbzepisode.org)